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                [Sdoi2013]城市规划                </h1>
                <p>时间限制：20s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：64MB</p>			</div>
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                                <h3>题目描述</h3><p><p><img height="332" alt="" width="773" src="../file/3204_0.jpg" /></p></p><hr/><h3>输入格式</h3><p><p><span style="font-size: medium">第一行两个整数&nbsp;N, M&nbsp;，如题意所示&nbsp; <br />
接下来的&nbsp;N&nbsp;行，每行&nbsp;M&nbsp;个字符表示这片地带的初始情况。&nbsp; <br />
接下来的一行一个整数&nbsp;Q，表示操作次数 <br />
就下来的&nbsp;Q&nbsp;行，每行有两种格式： <br />
C i j k : &nbsp;把第&nbsp;i&nbsp;行第&nbsp;j&nbsp;个格子修改成&nbsp;k <br />
Q l r: &nbsp;询问&nbsp;(l, 1) (r, M)&nbsp;这块地带连通块个数&nbsp;<br />
</span></p></p><hr/><h3>输出格式</h3><p><p><font size="4">对于每个询问中的&nbsp;Q，输出一行，一个数字，表示当前的连通块个数&nbsp;&nbsp;<br />
&nbsp;<br />
</font></p></p><hr/><h3>样例输入</h3><pre>4  4
.O.. 
O+O| 
.O.. ..OO 
4 
Q 1 4 
C 2 4 + C 3 4 | Q 1 4 
 
 
</pre><hr/><h3>样例输出</h3><pre>2 
1 
</pre><hr/><h3>提示</h3><p><p class="MsoNormal" align="left" style="margin: 0.25pt -3pt 0pt 39pt; line-height: 12.75pt; text-align: left; mso-line-height-rule: exactly; tab-stops: 64.8pt 131.15pt; mso-layout-grid-align: none"><span style="font-size: medium"><span style="color: black; font-family: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 0pt">对于</span><span lang="EN-US" style="color: black; mso-bidi-font-size: 12.0pt; mso-font-kerning: 0pt"><font face="Times New Roman"><span style="mso-tab-count: 1"> </span>100%</font></span><span style="color: black; font-family: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 0pt">的数据，</span><span lang="EN-US" style="color: black; mso-bidi-font-size: 12.0pt; mso-font-kerning: 0pt"><font face="Times New Roman"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </span>N &lt;= 100000, M &lt;= 6, Q &lt;= 10000 </font></span></span><span lang="EN-US" style="font-size: 11pt; color: black; mso-bidi-font-size: 12.0pt; mso-font-kerning: 0pt"><font face="Times New Roman"><o:p></o:p></font></span></p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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